Threadless pipe connector



Jan. 23, 1940. E. KAYSING THREADLESS PIPE CONNECTOR Filed March 30, 1938ATTORNEY Patented Jan. 23, 1940 UNITED STATES PATENT OFFICE THREADLESSPIPE CONNECTOR Application March 30, 1938, Serial N 0. 198,845

1 Claim.

This invention relates to a certain new and useful improvement inthreadless-pipe connectors.

My invention has for its chief object the provi- 5 sion of a connectorof the type and for the purpose stated which comprises a plurality ofinexpensive members so co-operably constructed for ready manipulationfor the formation quickly, simply, and with a minimum of effort of arigid,

.0 firm, fluid-tight joint and for, in turn, convenient separation fordisconnecting the pipe-sections without any appreciable damage thereto.

And with the above and other objects in view, my invention resides inthe novel features of .5 form, construction, arrangement, andcombination of parts presently described and pointed out in the claim.

In the accompanying drawing:

Figure 1 is an enlarged longitudinal sectional 10 view of a connector orpipe-coupling of my invention, operatively shown in joint-formingconnection with a pipe-section;

Figure 2 is an end view of the clamping annl1 lus of the connector;

15 Figure 3 is a partly broken side elevational view of the annulus; and

Figure 4 is a fragmentary sectional view of the annulus, showing indetail the overlapping end-formation thereof, taken approximately on theline 4-4, Figure 3.

Referring now in more detail and by reference characters to the drawing,which illustrates a preferred embodiment of the present invention, Adesignates a threadless pipe-section which is to 5 be connected to'alike section, not shown.

Forming part of the connector and constructed for snug collar-wisedisposition about an end of the pipe-section A, is a suitably elongatedcylindrical coupling-member B comprising preferably 0 integrally acentral diametrically enlarged socalled nut-portion I and externallythreaded sleeve-portions 2, 3, disposed axially on opposite sides of thecentral portion I and each at its outwardly presented end internallychamfered or beveled, as at 1).

Provided for threaded engagement with a threaded portion of the memberB, in the present instance the portion 3, is an internally threaded ringC formed at its one end with a radially inwardly extendingflange-portion 4 sized and contoured at its inner periphery 5 forsnugwise fitting slidably over the pipe-section A, the ring C being alsochamfered or cut away on the inwardly presented face of itsflange-portion 4 in the provision of a beveled face'c complementary withand corresponding to the respective beveled faces b of thecoupling-sleeve 3.

The ring or collar C is preferably so proportioned with respect to thesleeve 3 of member B that, when the ring C is fully threaded on the 5sleeve 3, its beveled face 0 will be spaced axially from a beveled faceb of the sleeve 3 in the formation of an annular chamber, as, at 6,about the pipe-section A for loosely housing a split clamping-ring orannulus D which is transversely cupped and thereby given a somewhatconcave cross-section, as best seen in Figure 1. The annulus D has alength substantially greater than the circumferential dimension of thechamber 6 and is so formed that its free ends I, 8, will overlap for apredetermined distance, the one end 8 being axially cut away or reducedand cupped or concaved upon a shorter radius for smooth slidingdisposition in underlying relationship within the other end 1, as bestseen in Figure 3. The overlapping annulus-ends l, 8, are alsocircumferentially beveled along their respective abutting faces d, d, insuch manner that the circular contour of the annulus D will becontinuously maintained notwithstanding the overlapping relationship ofthe ends thereof, as best seen in Figure 4.

In use, the collar C and clamping-ring D are disposed about an end ofthe pipe-section A, as well as is also the sleeve-portion 3 of thecoupling B. The collar C is now shifted forwardly along the pipe-sectionA and over the ring or annulus D and threaded onto the sleeve 3 of thecoupling B. It will be evident in this connection that the annularchamber 6 formed between the sleeve 3, collar C, and pipe A willcontinuously become axially shorter as the collar C is threadedforwardly on the sleeve 3. Thus the housed ring D is compressed orcompacted both circumferentially and transversely within the chamber 6,the transverse compression thereof forcing the same to assume a greaterthan normal cupped or concave contour, so that its peripheral marginsengage the surface of the pipe-section A, and the circumferentialcompression thereof causing its overlapping end-portions 1, 8, to slideone within the other. The annulus D thus is tightly wrapped about andengaged with the pipe-section A, and

as the result of such combined elastic deformation, as it may be said,and circumferential reduction of the clamping ring or annulus D, theparticular pipe-section A will be securely, rigidly, and firmly retainedwithin the pipe coupling B for joint-connection in a similar manner witha second section, not here shown.

The annulus D is constructed of any suitable more or less elastic orresilient metal, and by reason of the unique co-operable shape andformation of the annulus D and the associated parts, not only may thejoint be conveniently efllciently made, but the joint is also entirelyfluid-proof. Further, should it be desired to remove the pipe-section Afrom thecoupling B, the collar C may be readily turned in the reversedirection and threaded ofi of the sleeve 3 in a simple and speedymanner, thereby allowing the annulus to expand and take or resume itsoriginal normal shape without any appreciable damage to the pipe A orthe coupling parts.

It should be understood that changes and modifications in the form,construction, arrangement, and combination of the several parts of theconnector may be made and substituted for those herein shown anddescribed without departing from the nature and principle of myinvention.

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

A pipe-connector including chamber-providing shiftably cooperablepipe-encircling members having inwardly presented beveled surfaces, andan annulus of concave-section housed within the chamber provided by saidmembers, the annulus having slidably overlapping beveled end-portionsand being adapted to be circumferentially constricted by said beveledsurfaces responsive to axial movement of said members toward each otherfor tightly gripping the pipe.

ERNEST KAYSING.

